Abstract

The different types of experimentally observed phase transitions in (TMTSF)2X and (TMTTF)2X salts (superconductivity, antiferromagnetism, spin-Peierls and anion ordering) are reviewed. Current theoretical models of these transitions and the related low-temperature properties are discussed. Both theoretical arguments and experimental results, mainly from transport and magnetic resonance measurements, suggest important effects of low dimensionality in these compounds.